I have added another word to my vocabulary, though I can’t guarantee it will stay. Thanks to my friend, Trish, I now know that psithurism (a noun) means, according to various sources, the sound of wind in the trees and the rustling of leaves or simply the sound of rustling of leaves.
It is pronounced, using the International Phonetic Alphabetic, as follows: sɪθjʊəˌɹɪzəm. If it makes it any easier, just leave off the “p” and pronounce it with the initial “i” being a “short” i.
